163879169 has 2 divisors, whose sum is σ = 163879170. Its totient is φ = 163879168.

The previous prime is 163879141. The next prime is 163879181. The reversal of 163879169 is 961978361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 34374769 = 11380^2 + 5863^2 .

It is a cyclic number.

It is not a de Polignac number, because 163879169 - 2²⁴ = 147101953 is a prime.

It is a super-2 number, since 2×163879169² = 53712764064261122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163879129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81939584 + 81939585.

It is an arithmetic number, because the mean of its divisors is an integer number (81939585).

Almost surely, 2^163879169 is an apocalyptic number.

It is an amenable number.

163879169 is a deficient number, since it is larger than the sum of its proper divisors (1).

163879169 is an equidigital number, since it uses as much as digits as its factorization.

163879169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The square root of 163879169 is about 12801.5299476274. The cubic root of 163879169 is about 547.2359049620.

The spelling of 163879169 in words is "one hundred sixty-three million, eight hundred seventy-nine thousand, one hundred sixty-nine".